The PaintBox Project - Java Software Solutions: Foundations of Program Design - page 704

File Edit

Select Line Oval Rect Color

FIGURE J.1 A sketch of the user interface for the PaintBox program

with the client. For other systems there may be many such sketches for each screen
of the program.
The interface sketch shows a main drawing area where the user will create
a drawing. The top edge contains a set of buttons used to select various tools,
such as the oval tool to draw an oval or circle, the color tool to change the
current drawing color, and a select tool to select a previously drawn shape to
modify or move it. Two menu headings are shown along the top edge. The
File menu contains operations to begin a new drawing, save a drawing, and
exit the program. The Edit menu contains editing operations such as cut, copy,
and paste.
As a result of the discussions with the client, several additional requirements
issues are established:

There is no need to have separate user interactions for circles or squares
because they are subsets of ovals and rectangles, respectively.

■

The user should also be able to create polyline shapes.

■

The buttons used to select drawing tools should have icons instead of words. ■